Zipper



FIG. 1 shows a front perspective view of a zipper;

FIG. 2 shows a front elevation view of the zipper of FIG. 1;

FIG. 3 shows a rear elevation view of the zipper of FIG. 1;

FIG. 4 shows a left elevation view of the zipper of FIG. 1;

FIG. 5 shows a right elevation view of the zipper of FIG. 1;

FIG. 6 shows a top view of the zipper of FIG. 1; and,

FIG. 7 shows a bottom view of the zipper of FIG. 1.

The broken lines showing the body of the bag are for the purposes of illustrating environment and form no part of the claimed design. 

The ornamental design for a zipper, as shown and described. 